CN113482814A - Ship generator fuel supply system and fuel supply method - Google Patents
Ship generator fuel supply system and fuel supply method Download PDFInfo
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- CN113482814A CN113482814A CN202110742051.1A CN202110742051A CN113482814A CN 113482814 A CN113482814 A CN 113482814A CN 202110742051 A CN202110742051 A CN 202110742051A CN 113482814 A CN113482814 A CN 113482814A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
- F02M37/0088—Multiple separate fuel tanks or tanks being at least partially partitioned
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/462—Delivery valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention provides a fuel supply system and a fuel supply method for a ship generator, wherein the fuel supply system comprises a first diesel tank, a second diesel tank, a first heavy oil tank, a second heavy oil tank, a heat dissipation fin, a cache cabinet and a generator, the cache cabinet is arranged between a three-way valve on a fuel inlet pipeline of the generator and the generator, the heat dissipation fin is arranged on an inlet pipeline of a diesel emergency pump, and a valve part is arranged in front of the heat dissipation fin for isolation. The invention has the function of protecting the safety of equipment when the power is off in a fuel mode of the generator, and diesel oil and heavy oil are gradually mixed to enter the equipment when the power is off, so that the temperature of the fuel oil in the equipment can not be rapidly reduced, and the safety of the equipment is protected.
Description
Technical Field
The invention relates to the technical field of ship construction, in particular to a fuel supply system and a fuel supply method for a ship generator.
Background
The generator is the core of the whole ship power supply, and the operation of the generator cannot be stopped in the ship navigation and wharf debugging stages, so that the large ship is provided with the power-off automatic reset function, and the generator can automatically start the emergency diesel pump to restart the generator by using diesel oil after the system is powered off due to the fact that the generator stops operating unexpectedly. In addition, the fuel oil of the generator usually comprises two types, namely diesel oil and heavy oil, and when different fuel oil is used, the return oil of the system can also return to the corresponding oil tank, so that the design of the fuel oil supply system of the generator needs to fully consider the occurrence of relevant conditions, and the heavy oil is prevented from returning to the diesel oil tank to cause that other equipment needing clean diesel oil cannot operate. Therefore, the fuel supply system of the generator needs to have extremely high reliability and safety.
At present, the conventional fuel oil system of the generator can meet the requirements, but when the power is cut off in a heavy oil mode of the generator and the generator supplies oil to an emergency diesel oil pipeline, the temperature of the fuel oil in the generator can be rapidly reduced, so that the temperature in a cylinder of the generator is reduced too rapidly, and the cylinder is damaged or the service life of the cylinder is shortened; meanwhile, when heavy oil is used, although related valves are designed to isolate the heavy oil cabin from the diesel oil cabin, when the valves are damaged or misoperation is carried out by personnel, the heavy oil enters the diesel oil cabin with a certain probability, so that other equipment needing clean diesel oil cannot operate. Thus, there is a safety risk in the conventional fuel supply system for the generator, and further improvement is needed.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention provides a fuel supply system for a marine generator, which is used for solving the problem of potential safety hazard of the fuel supply system for the marine generator during operation. In addition, the invention also provides a fuel supply method for the marine generator.
In order to achieve the above objects and other related objects, the present invention adopts the following technical solutions:
the invention provides a fuel supply system of a ship generator, which comprises a first diesel tank, a second diesel tank, a first heavy oil tank, a second heavy oil tank, a first outlet valve, a second outlet valve, a third outlet valve, a fourth outlet valve, a first three-way valve, a second three-way valve, a third three-way valve, a first pressure regulating valve, a second pressure regulating valve, a first oil return valve, a third oil return valve, a fourth oil return valve, a radiating fin, a first fuel supply pump, a second fuel supply pump, an emergency diesel pump, a fuel mixing barrel, a buffer cabinet and a generator,
the outlet of the first diesel tank is connected with the first outlet valve, the outlet of the second diesel tank is connected with the second outlet valve, the outlet of the first heavy oil tank is connected with the third outlet valve, the outlet of the second heavy oil tank is connected with the fourth outlet valve, the first outlet valve and the second outlet valve are connected with the diesel delivery main pipe, the diesel delivery main pipe is connected with the first diesel branch pipe and the second diesel branch pipe, the first diesel branch pipe is connected with the first inlet of the first three-way valve, the second diesel branch pipe is connected with the emergency diesel pump, the emergency diesel pump is connected with the first inlet of the second three-way valve, the third outlet valve and the outlet of the fourth outlet valve are connected with the heavy oil delivery main pipe, the heavy oil delivery main pipe is connected with the second inlet of the first three-way valve, and the outlet of the first three-way valve is connected with the first fuel supply pump, the first fuel oil supply pump is connected with an inlet of the oil mixing barrel, an outlet of the oil mixing barrel is connected with a second fuel oil supply pump, an outlet of the second fuel oil supply pump is connected with a second inlet of the second three-way valve, an outlet of the second three-way valve is connected with an inlet of the buffer cabinet, an outlet of the buffer cabinet is connected with a fuel oil inlet of the generator,
the fuel oil return outlet of the generator is connected with the inlet of the third three-way valve, the first outlet of the third three-way valve is connected with the first oil return branch pipe and the second oil return branch pipe, the first oil return branch pipe is connected with an inlet of the oil mixing barrel, the second oil return branch pipe is connected with the first pressure regulating valve, the first pressure regulating valve is connected with the first oil return valve and the fourth oil return valve, the third oil return valve is connected with an inlet of the first heavy oil tank, the fourth oil return valve is connected with an inlet of the second heavy oil tank, a second outlet of the third three-way valve is connected with the second pressure regulating valve, the second pressure regulating valve is connected with the first oil return valve and the second oil return valve, the first oil return valve is connected with the second diesel branch pipe, and a radiating fin is arranged between the first oil return valve and the second diesel branch pipe, and the second oil return valve is connected with an inlet of the second diesel tank.
Preferably, a pressure value of the second pressure regulating valve is larger than a pressure value of the first pressure regulating valve.
As preferred technical scheme, emergent diesel pump set up in fin with between the second three-way valve.
In a second aspect of the present invention, a method for supplying fuel to a marine generator is provided, which includes the following steps:
when the oil return is suddenly increased abnormally, the pressure in the oil mixing barrel is increased to the set value of the first pressure regulating valve, the first pressure regulating valve is opened, and the oil returns to the first heavy oil cabin and the second heavy oil cabin.
In a third aspect of the present invention, a fuel supply method for a ship generator is provided, which includes the following steps:
and when the pressure value of the fuel oil return outlet is increased to the set value of the second pressure regulating valve, the second pressure regulating valve is opened, and the fuel oil returns to the second diesel cabin.
In a fourth aspect of the present invention, a method for supplying fuel to a marine generator is provided, which includes the steps of:
when the heavy oil is used for operating the generator or the spare vehicle, the third outlet valve and the fourth outlet valve are opened, the second inlet of the first three-way valve is opened, the second inlet of the second three-way valve is opened, the first outlet of the third three-way valve is opened, the third oil return valve and the fourth oil return valve are opened, the electric generator oil return enters the oil mixing barrel, when the pressure value in the oil mixing barrel is increased to the set value of the first pressure regulating valve, the first pressure regulating valve is opened, and the electric generator oil return returns to the first heavy oil cabin and the second heavy oil cabin.
As an optimal technical scheme, the power of the generator is cut off in a heavy oil supply mode, an emergency diesel pump of the generator is started, a first three-way valve is opened, a second three-way valve is opened, a first inlet of the second three-way valve is opened, and low-temperature diesel oil is mixed with high-temperature heavy oil in a cache cabinet and then enters the generator; after the residual heavy oil is consumed, the first inlet of the third three-way valve is closed, the second inlet is opened, the first oil return valve is opened, the second oil return valve is closed, and return oil enters the emergency diesel pump through the radiating fins.
As described above, the full inventive name of the present invention has the following advantageous effects:
(1) the invention has the function of protecting the safety of equipment when the power is off in a fuel mode of the generator, and diesel oil and heavy oil are gradually mixed to enter the equipment when the power is off, so that the temperature of the fuel oil in the equipment can not be rapidly reduced, and the safety of the equipment is protected.
(2) The emergency diesel pump has the function of protecting equipment and system safety when the emergency diesel pump is used for supplying oil for a long time, return oil returns to the inlet of the emergency diesel pump through the radiating fins, and the diesel oil returns to the inlet of the pump after being cooled through the radiating fins, so that the pump damage caused by the fact that the diesel oil with higher temperature enters the pump is avoided, and meanwhile, the pollution of a diesel oil cabin caused by the fact that the diesel oil containing a small amount of heavy oil returns to a tank cabinet is avoided, and the safety of the equipment and the system is protected.
(3) When the generator is in an emergency use mode, the supply pump and the fuel supply pump are adopted to supply oil, the equipment and the system are protected from being safe, when the third three-way valve is in failure or misoperation in a heavy oil mode, heavy oil can only enter the second diesel oil cabin, the first diesel oil cabin ensures the cleanness of the cabinet through a physical isolation mode, and the ship is ensured to be always used with clean diesel oil, so that the system safety is ensured.
(4) Compared with a conventional generator fuel system, the system has the advantages of convenient manufacture of the added cache cabinet and the added radiating fins, low cost, and better economy and popularization.
Drawings
Fig. 1 shows a schematic structural diagram of a fuel supply system of a marine generator according to the invention.
Wherein the reference numerals are specified as follows: the system comprises a first diesel tank 1, a second diesel tank 2, a first heavy oil tank 3, a second heavy oil tank 4, a generator 5, a first outlet valve 6, a second outlet valve 7, a third outlet valve 8, a fourth outlet valve 9, a first three-way valve 10, a first fuel supply pump 11, a second fuel supply pump 12, an emergency diesel pump 13, a first oil return valve 14, a radiating fin 15, a fuel mixing barrel 16, a cache cabinet 17, a third three-way valve 18, a second pressure regulating valve 19, a first pressure regulating valve 20, a second oil return valve 21, a fourth oil return valve 22, a third oil return valve 23 and a second three-way valve 24.
Detailed Description
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1, the present invention provides a fuel supply system for a marine generator, including a first diesel tank 1, a second diesel tank 2, a first heavy oil tank 3, a second heavy oil tank 4, a first outlet valve 6, a second outlet valve 7, a third outlet valve 8, a fourth outlet valve 9, a first three-way valve 10, a second three-way valve 24, a third three-way valve 18, a first pressure regulating valve 20, a second pressure regulating valve 19, a first oil return valve 14, a third oil return valve 23, a fourth oil return valve 22, a heat dissipating fin 15, a first fuel supply pump 11, a second fuel supply pump 12, an emergency diesel pump 13, an oil mixing barrel 16, a buffer cabinet 17 and a generator 5,
the outlet of the first diesel tank 1 is connected with a first outlet valve 6, the outlet of the second diesel tank 2 is connected with a second outlet valve 7, the outlet of the first heavy oil tank 3 is connected with a third outlet valve 8, the outlet of the second heavy oil tank 4 is connected with a fourth outlet valve 9, the first outlet valve 6 and the second outlet valve 7 are connected with a diesel delivery main pipe, the diesel delivery main pipe is connected with a first diesel branch pipe and a second diesel branch pipe, the first diesel branch pipe is connected with a first inlet of a first three-way valve 10, the second diesel branch pipe is connected with an emergency diesel pump 13, the emergency diesel pump 13 is connected with a first inlet of a second three-way valve 24, the outlets of the third outlet valve 8 and the fourth outlet valve 9 are connected with a heavy oil delivery main pipe, the heavy oil delivery main pipe is connected with a second inlet of the first three-way valve 10, the outlet of the first three-way valve 10 is connected with a first fuel oil supply pump 11, the first fuel oil supply pump 11 is connected with the inlet of a mixing barrel 16, the outlet of the mixing barrel 16 is connected with a second fuel supply pump 12, the outlet of the second fuel supply pump 12 is connected with the second inlet of the second three-way valve 24, the outlet of the second three-way valve 24 is connected with the inlet of the buffer tank 17, the outlet of the buffer tank 17 is connected with the fuel inlet of the generator 5,
the fuel oil return outlet of the generator 5 is connected with the inlet of a third three-way valve 18, the first outlet of the third three-way valve 18 is connected with a first oil return branch pipe and a second oil return branch pipe, the first oil return branch pipe is connected with the inlet of a mixed oil barrel 16, the second oil return branch pipe is connected with a first pressure regulating valve 20, the first pressure regulating valve 20 is connected with a first oil return valve 14, a fourth oil return valve 22, a third oil return valve 23 is connected with an inlet of the first heavy oil tank 3, the fourth oil return valve 22 is connected with an inlet of the second heavy oil tank 4, a second outlet of the third three-way valve 18 is connected with a second pressure regulating valve 19, the second pressure regulating valve 19 is connected with a first oil return valve 14 and a second oil return valve 21, the first oil return valve 14 is connected with a second diesel branch pipe, a heat radiating fin 15 is arranged between the first oil return valve 14 and the second diesel branch pipe, the second oil return valve 21 is connected with an inlet of the second diesel tank 2, and the emergency diesel pump 13 is arranged between the heat radiating fin 15 and the second three-way valve 24. The pressure value of the second pressure regulating valve 19 is 0.3-0.5bar greater than the pressure value of the first pressure regulating valve 20.
In the using process, the invention comprises the following working conditions:
(1) when the diesel oil is used for operating the generator 5, the first outlet valve 6 and the second outlet valve 7 are opened, the first inlet of the first three-way valve 10 is opened, the second inlet of the second three-way valve 24 is opened, the first outlet of the third three-way valve 18 is opened, the third oil return valve 23 is opened, the fourth oil return valve 22 is opened, return oil of the generator 5 enters the oil mixing barrel 16, and if the pressure in the oil mixing barrel 16 is increased to the set value of the first pressure regulating valve 20 in sudden abnormal increase of the return oil, the first pressure regulating valve 20 is opened, and the return oil returns to the first heavy oil cabin 3 and the second heavy oil cabin 4.
(2) When diesel is used for standby, the generator 5 is operated by the diesel, the first outlet valve 6 and the second outlet valve 7 are opened, the first inlet of the first three-way valve 10 is opened, the second inlet of the second three-way valve 24 is opened, the second outlet of the third three-way valve 18 is opened, the first oil return valve 14 is closed, the second oil return valve 21 is opened, and when the pressure value of the fuel oil return outlet is increased to the set value of the second pressure regulating valve 19, the second pressure regulating valve 19 is opened and oil returns to the second diesel tank 2.
(3) When the generator 5 is operated by heavy oil or a spare vehicle is used, the third outlet valve 8 and the fourth outlet valve 9 are opened, the second inlet of the first three-way valve 10 is opened, the second inlet of the second three-way valve 24 is opened, the first outlet of the third three-way valve 18 is opened, the third oil return valve 23 and the fourth oil return valve 22 are opened, the return oil of the generator 5 enters the oil mixing barrel 16, when the pressure value in the oil mixing barrel 16 is increased to the set value of the first pressure regulating valve 20, the first pressure regulating valve 20 is opened, and the return oil returns to the first heavy oil cabin 3 and the second heavy oil cabin 4. When the power of the generator 5 is cut off in the heavy oil supply mode, the emergency diesel pump 13 of the generator 5 is started, the first three-way valve 10 is opened, the second three-way valve 24 is opened, the first inlet of the second three-way valve 24 is opened, and low-temperature diesel oil is mixed with high-temperature heavy oil in the cache cabinet 17 and then enters the generator 5; after the residual heavy oil is consumed, the first inlet of the third three-way valve 18 is closed, the second inlet is opened, the first oil return valve 14 is opened, the second oil return valve 21 is closed, and return oil enters the emergency diesel pump 13 through the radiating fins 15.
The invention can ensure that the temperature of the diesel oil in the generator 5 is slowly reduced when the generator 5 is restarted and operated by using the emergency diesel oil pump 13 to supply the diesel oil after the power failure occurs due to faults in the fuel mode, thereby ensuring the safety of the equipment, and simultaneously ensuring that one diesel oil cabin is not polluted due to return oil through physical isolation, thereby ensuring the safety of the whole ship system.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A fuel supply system of a ship generator is characterized by comprising a first diesel tank, a second diesel tank, a first heavy oil tank, a second heavy oil tank, a first outlet valve, a second outlet valve, a third outlet valve, a fourth outlet valve, a first three-way valve, a second three-way valve, a third three-way valve, a first pressure regulating valve, a second pressure regulating valve, a first oil return valve, a third oil return valve, a fourth oil return valve, a radiating fin, a first fuel supply pump, a second fuel supply pump, an emergency diesel pump, a fuel mixing barrel, a cache cabinet and a generator,
the outlet of the first diesel tank is connected with the first outlet valve, the outlet of the second diesel tank is connected with the second outlet valve, the outlet of the first heavy oil tank is connected with the third outlet valve, the outlet of the second heavy oil tank is connected with the fourth outlet valve, the first outlet valve and the second outlet valve are connected with the diesel delivery main pipe, the diesel delivery main pipe is connected with the first diesel branch pipe and the second diesel branch pipe, the first diesel branch pipe is connected with the first inlet of the first three-way valve, the second diesel branch pipe is connected with the emergency diesel pump, the emergency diesel pump is connected with the first inlet of the second three-way valve, the third outlet valve and the outlet of the fourth outlet valve are connected with the heavy oil delivery main pipe, the heavy oil delivery main pipe is connected with the second inlet of the first three-way valve, and the outlet of the first three-way valve is connected with the first fuel supply pump, the first fuel oil supply pump is connected with an inlet of the oil mixing barrel, an outlet of the oil mixing barrel is connected with a second fuel oil supply pump, an outlet of the second fuel oil supply pump is connected with a second inlet of the second three-way valve, an outlet of the second three-way valve is connected with an inlet of the buffer cabinet, an outlet of the buffer cabinet is connected with a fuel oil inlet of the generator,
the fuel oil return outlet of the generator is connected with the inlet of the third three-way valve, the first outlet of the third three-way valve is connected with the first oil return branch pipe and the second oil return branch pipe, the first oil return branch pipe is connected with an inlet of the oil mixing barrel, the second oil return branch pipe is connected with the first pressure regulating valve, the first pressure regulating valve is connected with the first oil return valve and the fourth oil return valve, the third oil return valve is connected with an inlet of the first heavy oil tank, the fourth oil return valve is connected with an inlet of the second heavy oil tank, a second outlet of the third three-way valve is connected with the second pressure regulating valve, the second pressure regulating valve is connected with the first oil return valve and the second oil return valve, the first oil return valve is connected with the second diesel branch pipe, and a radiating fin is arranged between the first oil return valve and the second diesel branch pipe, and the second oil return valve is connected with an inlet of the second diesel tank.
2. The marine generator fuel supply system of claim 1, wherein a pressure value of the second pressure regulating valve is greater than a pressure value of the first pressure regulating valve.
3. The marine generator fuel supply system of claim 1, wherein the emergency diesel pump is disposed between the heat radiating fin and the second three-way valve.
4. A fuel supply method for a marine generator, which adopts the fuel supply system for a marine generator according to claim 1, comprising the steps of:
when the oil return is suddenly increased abnormally, the pressure in the oil mixing barrel is increased to the set value of the first pressure regulating valve, the first pressure regulating valve is opened, and the oil returns to the first heavy oil cabin and the second heavy oil cabin.
5. A fuel supply method for a marine generator, which adopts the fuel supply system for a marine generator according to claim 1, comprising the steps of:
and when the pressure value of the fuel oil return outlet is increased to the set value of the second pressure regulating valve, the second pressure regulating valve is opened, and the fuel oil returns to the second diesel cabin.
6. A fuel supply method for a marine generator, which adopts the fuel supply system for a marine generator according to claim 1, comprising the steps of:
when the heavy oil is used for operating the generator or the spare vehicle, the third outlet valve and the fourth outlet valve are opened, the second inlet of the first three-way valve is opened, the second inlet of the second three-way valve is opened, the first outlet of the third three-way valve is opened, the third oil return valve and the fourth oil return valve are opened, the electric generator oil return enters the oil mixing barrel, when the pressure value in the oil mixing barrel is increased to the set value of the first pressure regulating valve, the first pressure regulating valve is opened, and the electric generator oil return returns to the first heavy oil cabin and the second heavy oil cabin.
7. The fuel supply method for the marine generator according to claim 6, comprising the steps of:
the power of the generator is cut off in a heavy oil supply mode, the emergency diesel pump of the generator is started, the first three-way valve is opened, the second three-way valve is opened, the first inlet of the second three-way valve is opened, and low-temperature diesel oil is mixed with high-temperature heavy oil in the cache cabinet and then enters the generator; after the residual heavy oil is consumed, the first inlet of the third three-way valve is closed, the second inlet is opened, the first oil return valve is opened, the second oil return valve is closed, and return oil enters the emergency diesel pump through the radiating fins.
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| CN202110742051.1A CN113482814B (en) | 2021-06-30 | 2021-06-30 | Ship generator fuel supply system and fuel supply method |
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| CN202110742051.1A CN113482814B (en) | 2021-06-30 | 2021-06-30 | Ship generator fuel supply system and fuel supply method |
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| CN113482814B CN113482814B (en) | 2022-08-05 |
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| CN211116257U (en) * | 2019-08-30 | 2020-07-28 | 广州文冲船厂有限责任公司 | Fuel oil system for emergency starting of marine diesel generator |
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